Question

我使用SQL Server。

我想编写一个存储过程，以查看是否存在questionid和employeeid（questionid在表question中，与employeeid相同，在表employee中），并查看它们是否在表中不存在（在表contentment中没有重复项）。如果需要，我希望为用户提供提高。

就我而言，可能有一个重复项，但不能在同一DATE上！

Contentment 表具有列：

employeeid, questionid, date, score

employeeid，questionid，date组成主键。

所以我想要这样的东西：

1,1, 18-11-2018, null
1,1, 19-11-2018, null

不是这样的：

1,1, 18-11-2018, null
1,1, 18-11-2018, null

我已经制作了一些东西，但是它不起作用（1-1-1900是标准日期，因为它是primary key，需要插入，score因为用户需要这样做）：

    @employeeid int,
    @questionid int
as 
begin
    if exists (select * from question where questionid = @questionid)
       and exists (select * from employee where employeeid= @employeeid)
    begin 
        insert into contentment (employeeid, questionid, date, score)
        values (@employeeid, @questionid, '1-1-1900', null)
    end

    if (select count(*) 
        from contentment
        where employeeid = @employeeid 
          and questionid = @questionid 
          and date = date) = 0
        raiserror ('@employeeid or @questionid already existing', 16, 1)    
    else
        raiserror ('@employeeid or @questionid are not existing', 16, 1, null)          
    end

Answer 1

如果您要进行日期验证，则还需要提供@date。我创建了一个示例存储过程，其中提供了详细信息：

DROP PROCEDURE P_ContentmentInsert
GO
CREATE PROCEDURE P_ContentmentInsert
    @employeeid int,
    @questionid int,
    @date       DATE
AS
BEGIN
    --Check if exists Employee, Question and Contentment
    DECLARE @IsEmployeeExists       INT=ISNULL((SELECT COUNT(1) FROM employee WHERE employeeid= @employeeid),0)
    DECLARE @IsQuestionExists       INT=ISNULL((SELECT COUNT(1) FROM question WHERE questionid = @questionid),0)
    DECLARE @IsContentmentExists    INT=ISNULL((SELECT COUNT(1) FROM contentment WHERE questionid = @questionid and employeeid= @employeeid and [date]=@date),0)
    DECLARE @ErrorMessage           VARCHAR(1000)=''

    --If one of the validation not passed give error message
    IF (@IsEmployeeExists=0 OR @IsQuestionExists=0 OR @IsContentmentExists=0)
    BEGIN
        IF @IsEmployeeExists=0
                SET @ErrorMessage='-EmployeeId Not exists'
        IF @IsQuestionExists=0
                SET @ErrorMessage=@ErrorMessage+'-QuesitonId Not exists'
        IF @IsContentmentExists=0
                SET @ErrorMessage=@ErrorMessage+'-Contentment already exists'
        RETURN
    END

    --If there is no problem insert it.
    IF @IsEmployeeExists>0 and @IsQuestionExists>0 and @IsContentmentExists>0
    BEGIN
        INSERT INTO contentment (employeeid, questionid, date, score)
        VALUES (@employeeid, @questionid, @date, null)
    END

END

具有两个提升程序的存储过程

1 个答案: